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GI neuroendocrine cancer and immunohistochemistry

Sung Bae Park, Suk Bae Moon, Young Joon Ryu, Jeana Hong, Yang Hee Kim, Gi Bong Chae, Seong Kweon Hong
Large cell neuroendocrine carcinoma (LCNEC) in the biliary system is a poorly differentiated, high-grade neuroendocrine tumor. These tumors exhibit aggressive behavior and an increased tendency for early nodal and distant metastases. Herein, we report an unusual case of a pure primary LCNEC of the common bile duct (CBD). A 75-year-old female presented with nausea and jaundice. The patient underwent a CBD excision with lymph node dissection. Upon histological and immunohistochemical examination, the tumor exhibited pure large cell-type neuroendocrine features...
December 21, 2014: World Journal of Gastroenterology: WJG
Deepak Abraham, Leigh Delbridge, Roderick Clifton-Bligh, Phillip Clifton-Bligh, Simon Grodski, Bruce G Robinson, Marinella Messina, Stan Sidhu
BACKGROUND: Carcinoembryonic antigen (CEA) is a tumour marker commonly associated with gastrointestinal malignancy. Patients presenting with an elevated CEA will therefore often undergo extensive investigations in order to elucidate an underlying gastrointestinal malignancy that may not be clinically apparent. However the GI tract is not the only source of CEA elevation. METHODS: We present a series of patients presenting with raised CEA levels that were initially investigated for a gastrointestinal cause, but after work up were detected to have medullary thyroid cancer...
November 2010: ANZ Journal of Surgery
Florian Hohla, Angelika Moder, Ursula Mayrhauser, Cornelia Hauser-Kronberger, Andrew V Schally, Jozsef L Varga, Marta Zarandi, Stefan Buchholz, Rudolf Huber, Elmar Aigner, Markus Ritter, Christian Datz
Recent evidence indicates that growth hormone-releasing hormone (GHRH) functions as a growth factor for gastrointestinal (GI) tumours. The tumourigenic effects of GHRH appear to be mediated by the splice variant 1 (SV-1) of GHRH receptor as well as the full length pituitary type receptor for GHRH (GHRH-R). We examined the protein and mRNA expression of GHRH-R and SV-1 in normal human tissues and tumours of the gastrointestinal (GI-) tract by immunohistochemical staining and reverse transcriptase (RT)-PCR. Squamous cells and squamous cell carcinoma of the oesophagus were negative for GHRH-R and SV-1, while Barrett's mucosa and adenocarcinomas of the oesophagus showed a strong expression of both receptors...
July 2008: International Journal of Oncology
Sofia Vikman, Magnus Essand, Janet L Cunningham, Manuel de la Torre, Kjell Oberg, Thomas H Tötterman, Valeria Giandomenico
Classical midgut carcinoids are serotonin-secreting tumors derived from enterochromaffin cells in the gut. Metastatic disease represents a therapeutic challenge and immunotherapy implies a novel approach for treatment. In order to define antigens suitable for T-cell therapy with a preferential expression in midgut carcinoid tissue a broad screening of genes with preferential neuroendocrine restriction, genes described as over-expressed in various malignancies, and genes encoding cancer-testis associated antigens was performed...
2005: Acta Oncologica
S Dirnhofer, P Koessler, C Ensinger, H Feichtinger, S Madersbacher, P Berger
Cancer registration statistics of economically advanced countries indicate that bladder carcinoma incidence ranks fourth in men and eighth in women, but a reliable tumor marker for predicting the disease course is still lacking. We designed an immunohistochemical study to comprehensively assess the trophoblastic hormone production profile of transitional cell carcinoma (TCC) of the bladder. Moreover, we correlated histological differentiation and tumor stages with marker expression and, finally, evaluated a potential tumor origin of hCGbeta core-fragment (hCGbetacf)...
April 1998: Human Pathology
M Ychou, P Rougier, J M Bidart, D Bellet, J M Tigaud, C Bohuon
Over the last few years, many tumor markers have been proposed to clinicians but only a limited number of them meet the necessary criteria to be useful for either screening, diagnosis, prognosis or follow-up of gastrointestinal (GI) tumors. Both CEA and Ca 19-9 have proven to be clinically useful for the detection of recurrent tumors. AFP remains the most useful marker for the follow-up of hepatocellular carcinoma (HCC). Its interest for the early detection of primary tumor is debated. Recent data suggest that assays based on monoclonal antibodies to AFP could be used for detection HCC in high risk populations...
1989: Annales de Chirurgie
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